Hrdoňovice - vlečka
General Characteristics
County (administration):
Královéhradecký kraj
District (town):
Jičín
Village:
Újezd pod Troskami
Cadastre:
Újezd pod Troskami
Map sheets:
03-34 Sobotka, 03-342 Rovensko p.T.
Accessibility:
access without footpath
ID:
3222
Geology
Short characteristics of the site:
Bohemian Cretaceous Basin. Railway siding cut exposes interesting sandstone turbidites of the Teplice Formation, underlying the Hrubá Skála quadersandstones. The oldest beds consist of dark clayey siltstones and marlstones. The flysch development is 15 m thick and contains also fossiliferous calcareous sandstones with abundant ichnofossils. Accumulation of Inoceramus shells was found. This locality is important as a representative of development of the Teplice Formation. In 2021 it was approved as one of the auxiliary sections for the base of the Coniacian Stage because the biostratigraphic and chemostratigraphic records are shown to be faithfully recorded in a depositional system influenced by substantial terrigenous clastic input.
Regional geologic unit:
Bohemian Massif > Cretaceous of the Bohemian Massif > Bohemian Cretaceous Basin > Bohemian Cretaceous Basin - Jizera development
Stratigraphy:
Upper Cretaceous
Subject:
sedimentology, paleontology
Geological phenomenon:
outcrop, fossils fauna, bed, ichnofossil, lithological boundary, stratotype
Genesis:
sedimentary
Rock:
sandstone, siltstone
Territorial protection
Level of protection:
Registered interesting geological localities
Part of national geopark:
Bohemian Paradise
Conflicts of interests:
road construction
References
- Čech, S., et.al. (2011): Základní geologická mapa České republiky 1 : 25 000 s Vysvětlivkami 03-342 Rovensko pod Troskami. - Česká geologická služba. Praha.
- ČECH, S. (2009a): některé nové nálezy inoceramové fauny v oblasti Českého ráje. – Zpr. geol. Výzk. v r. 2008, 85–91
- Čech, S., and Uličný, D., 2021, The Turonian–Coniacian stage boundary in an expanded siliciclastic succession: integrated stratigraphy in deltaic through offshore facies, Bohemian Cretaceous Basin. Cretaceous Research, v. 117, 104576, doi.org/10.1016/j.cretres.2020.104576
- Walaszczyk I., Čech S., Crampton J. S. et al. (2021): The Global Boundary Stratotype Section and Point (GSSP) for the base of the Coniacian Stage (Salzgitter-Salder, Germany) and its auxiliary sections (Słupia Nadbrzeżna, central Poland, Střeleč, Czech Republic and El Rosario, NE Mexico). - Episodes, podzim 2021, nestránkováno. ISSN 0705-3797. DOI 10.18814/epiiugs/2021/021022, https://www.episodes.org/journal/view.html?uid=2243&vmd=Full
Elaboration and Updating
Elaborated by:
Stanislav Čech, 14.07.2010
Updated by:
Čech Stanislav, 12.11.2011, Kukal Zdeněk, 21.12.2017
Citation
The database Important geological localities of the Czech Republic: 3222 [online]. Prague: Czech Geological Survey, 1998 [cit. 2023-06-16]. Available from: https:// lokality.geology.cz/3222.
Location in map:
Assessment
Scientifical assesment:
great
Educational assesment:
major
Significance:
supraregional
Representativeness:
middle
Geological importance:
significant study profile, geo-regional value (mapping), geoturistic value
Excursion locality:
yes
Locality conditions:
acceptable
You can send information about a change in the status of the site to lokality@geology.cz
